Barack Obama, NPR interview - June 1, 2009:
I believe that, strategically, the status quo is unsustainable when it comes to Israeli security; that, over time, in the absence of peace with the Palestinians, Israel will continue to be threatened militarily and will have enormous problems along its borders.
Hillary Clinton, CNN interview - June 7, 2009:
We see historical, demographic, political, technological trends that are very troubling as to Israel's future. At the same time, there is a legitimate aspiration of the Palestinian people that needs to be addressed.
This sounds like what Obama and Clinton are saying is that the United States does not expect to have the resources to contain Iran indefinitely and with an uncontained Iran, it will not be possible to maintain its string of pro-Israel dictatorships over most of the Arab world indefinitely.
But if they are going make vague references to threats and troubling trends, why wouldn't somebody ask them to spell them out?
The obvious corrollary, either that the Palestinians can get better terms by waiting, or that if they do not accept a state today, they will be able to get one Palestinian-majority state over the entire territory later, is probably too painful for either Obama or Clinton to even contemplate.